• Qiongyao Tang, Ying Zhong, Chenyun Xu, Wangya Li, Haiyan Wang, and Yu Hou.
• Operating Theatre, Haikou Maternal, and Child Health Hospital, Haikou, Hainan, China.
• Medicine (Baltimore). 2022 Apr 15; 101 (15): e29126e29126.

BackgroundGestational diabetes mellitus (GDM) is associated with short- and long-term health issues for mother and child; preventing these complications is crucially important. This study aimed to perform a systematic review and network meta-analysis of the relationships among 5 interventions used to prevent GDM.Materials And MethodsA comprehensive literature search was performed to pool evidence from inception to June 30, 2020. The type of studies was confined to randomized control trials and quasi-randomized control trials published in English investigating the interventions for preventing GDM, including physical activity, dietary intervention, probiotic intervention, mixed intervention, and inositol supplementation. The data were pooled together to report the odds ratio (OR) of GDM with a corresponding 95% credible interval (CrI) and generate a network plot, the surface under the cumulative ranking curve plot, and contribution plot. In addition, loop inconsistency was examined, and a funnel plot combined with Egger test was used to measure heterogeneity.ResultsThe network meta-analysis included 46 randomized control trials involving 16,545 patients. Compared with placebo, physical activity (OR: 0.64, 95% CrI: 0.46-0.88) and probiotic intervention (OR: 0.57, 95% CrI: 0.34-0.96) reduced the incidence of GDM significantly. However, dietary intervention, a combination of physical activity and diet intervention, and inositol supplementation did not significantly alter GDM risk.ConclusionsPhysical activity and probiotic intervention are more effective than placebo in reducing the risk of developing GDM. Future work should focus on the type, duration, frequency, and timing of physical activity and probiotic intervention.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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